如何在Google Map API完全加载后显示？

Question

我尝试使用Google Maps API的Places search功能。

我的问题是，在地图完全加载后，搜索框会移动并且API容器的高度会发生变化。

我已经解决了问题demonstration。尝试刷新页面，您将观察到上述行为。

我发现了类似的问题，建议是 -

google.maps.event.addListenerOnce(map, 'idle', function() {
   google.maps.event.trigger(map, 'resize');
});

或

window.onload = map_initialize;

然而，他们似乎都没有解决这种转变行为。

Answer 1

一种选择是将myS.post("https://weavi.com/login",data=login_data,headers=header_info,cookies=myCookies) 设置为input，将其添加到空闲事件的地图上，然后显示它。

display:none

proof of concept fiddle

代码段

function initAutocomplete() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {
        lat: -33.8688,
        lng: 151.2195
    },
    zoom: 13,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });
  // Create the search box and link it to the UI element.
  var input = document.getElementById('pac-input');
  var searchBox = new google.maps.places.SearchBox(input);    
  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
  google.maps.event.addListenerOnce(map, 'idle', function() {
    input.style.display = "block";
  });

// This example adds a search box to a map, using the Google Place Autocomplete
// feature. People can enter geographical searches. The search box will return a
// pick list containing a mix of places and predicted search terms.

function initAutocomplete() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {
      lat: -33.8688,
      lng: 151.2195
    },
    zoom: 13,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });
  // Create the search box and link it to the UI element.
  var input = document.getElementById('pac-input');
  var searchBox = new google.maps.places.SearchBox(input);
  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
  google.maps.event.addListenerOnce(map, 'idle', function() {
    input.style.display = "block";
  });

  // Bias the SearchBox results towards current map's viewport.
  map.addListener('bounds_changed', function() {
    searchBox.setBounds(map.getBounds());
  });

  var markers = [];
  // Listen for the event fired when the user selects a prediction and retrieve
  // more details for that place.
  searchBox.addListener('places_changed', function() {
    var places = searchBox.getPlaces();

    if (places.length == 0) {
      return;
    }

    // Clear out the old markers.
    markers.forEach(function(marker) {
      marker.setMap(null);
    });
    markers = [];

    // For each place, get the icon, name and location.
    var bounds = new google.maps.LatLngBounds();
    places.forEach(function(place) {
      var icon = {
        url: place.icon,
        size: new google.maps.Size(71, 71),
        origin: new google.maps.Point(0, 0),
        anchor: new google.maps.Point(17, 34),
        scaledSize: new google.maps.Size(25, 25)
      };

      // Create a marker for each place.
      markers.push(new google.maps.Marker({
        map: map,
        icon: icon,
        title: place.name,
        position: place.geometry.location
      }));

      if (place.geometry.viewport) {
        // Only geocodes have viewport.
        bounds.union(place.geometry.viewport);
      } else {
        bounds.extend(place.geometry.location);
      }
    });
    map.fitBounds(bounds);
  });

}
google.maps.event.addDomListener(window, 'load', initAutocomplete);

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map {
  height: 100%;
}
.controls {
  margin-top: 10px;
  border: 1px solid transparent;
  border-radius: 2px 0 0 2px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  height: 32px;
  outline: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}
#pac-input {
  background-color: #fff;
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
  margin-left: 12px;
  padding: 0 11px 0 13px;
  text-overflow: ellipsis;
  width: 300px;
}
#pac-input:focus {
  border-color: #4d90fe;
}
.pac-container {
  font-family: Roboto;
}
#type-selector {
  color: #fff;
  background-color: #4d90fe;
  padding: 5px 11px 0px 11px;
}
#type-selector label {
  font-family: Roboto;
  font-size: 13px;
  font-weight: 300;
}
#target {
  width: 345px;
}

Answer 2

您只需使用defer attribute标记加载<script>的{​​{1}}标记，然后使用回调函数初始化地图。

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google maps JS api

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